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1. Gold districts of California (Volume no.193)
   58 downloads
2. Mother Lode gold belt of California (Volume no.108)
   32 downloads
3. California journal of mines and geology (Volume v.48)
   26 downloads
4. Geologic formations and economic development of the oil and gas fields of California. (In four parts, including outline geologic map showing oil and gas fields and drilled areas) (Volume no.118)
   25 downloads
5. Placer mining for gold in California (Volume no.135 c.2)
   23 downloads

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1. Gold districts of California (Volume no.193)
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2. Placer mining for gold in California (Volume no.135 c.2)
   4,601 downloads
3. Minerals of California: centennial volume, 1866-1966 (Volume no.189)
   3,233 downloads
4. Geologic formations and economic development of the oil and gas fields of California. (In four parts, including outline geologic map showing oil and gas fields and drilled areas) (Volume no.118)
   2,882 downloads
5. The clay resources and the ceramic industry of California (Volume no.99)
   2,682 downloads

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The Mother Lode region of California
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Minerals of California (Volume no.91)
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Mineral land classification : aggregate materials in the San Francisco-Monterey Bay area
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Mineral land classification : aggregate materials in the San Francisco-Monterey Bay area
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Special report (Volume No. 165)
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Special report (Volume No. 165)
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Special report (Volume No. 147)
1 year ago